<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>Title</title>
    <style type="text/css">
    form{
    	background: url(img/1.jpg) 0 0 no-repeat;
    }
    </style>
    <script type="text/javascript">
     
     if(self!=top){
    	 top.location=self.location;
     }
    </script>
</head>
<body>
  <h1>管理员登录</h1>
  <p style="color:red">
  ${msg}
<%--   <%
  request.setCharacterEncoding("utf-8");
    String msg=request.getParameter("msg");
  %>
  <!--  -->
  <%=msg==null?"":msg%> --%>
  </p>
<%
 if(session.getAttribute("USER_LOGIN")!=null){
	 response.sendRedirect("welcome.jsp");
	 return;
 }
%>  

<form method="post" action="LoginServlet">
    <input type="text" name="username" placeholder="用户名" required/>
    <input type="password" name="pass" placeholder="密码" required pattern="\w{3,20}"/>
  	<input type="checkbox" value="on" name="keeppassincookie"/>保留用户名密码
    <input type="submit" value="登录"/>
</form>
<img src="img/1.jpg"/>
</body>
</html>
